def set_file_writing(self, writing):
self.file_writing = writing
# send command to Odin Data
command = "config/hdf/file/path"
request = ApiAdapterRequest(self.file_dir, content_type="application/json")
self.adapters["fp"].put(command, request)
command = "config/hdf/file/name"
request.body = self.file_name
self.adapters["fp"].put(command, request)
command = "config/hdf/write"
request.body = "{}".format(writing)
self.adapters["fp"].put(command, request)
def monitor_fem_progress(self):
"""Check fem hardware progress.
Busy either:
-Initialising from cold (2 fudge frames)
-Normal initialisation
-Waiting for data collection to complete, either single/multi run
"""
if (self.fem.hardware_busy):
# Still sending data
IOLoop.instance().call_later(0.5, self.monitor_fem_progress)
return
else:
# Current collection completed; Do we have all the requested frames?
if self.extended_acquisition:
if (self.frames_already_acquired < self.number_frames):
# Need further bias window(s)
IOLoop.instance().add_callback(self.acquisition)
return
# Issue reset to summed_image
command = "config/summed_image/reset_image"
request = ApiAdapterRequest(self.file_dir,
content_type="application/json")
request.body = "{}".format(1)
self.adapters["fp"].put(command, request)
rc = self.daq.prepare_odin()
if not rc:
message = "Prepare Odin failed!"
self.fem._set_status_error(message)
self.status_error = message
self.reset_state_variables()
def acquisition(self, put_data=None):
"""Instruct DAQ and FEM to acquire data."""
# Synchronise first_initialisation status (i.e. collect 2 fudge frames) with FEM
if self.first_initialisation:
self.first_initialisation = self.fem.first_initialisation
else:
# Clear (any previous) daq error
self.daq.in_error = False
if self.extended_acquisition is False:
if self.daq.in_progress:
logging.warning("Cannot Start Acquistion: Already in progress")
self.fem._set_status_error(
"Cannot Start Acquistion: Already in progress")
return
self.total_delay = 0
self.number_frames_to_request = self.number_frames
if self.fem.bias_voltage_refresh:
# Did the acquisition coincide with bias dead time?
if self.bias_blocking_acquisition:
IOLoop.instance().call_later(0.1, self.acquisition)
return
# Work out how many frames can be acquired before next bias refresh
time_into_window = time.time() - self.bias_init_time
time_available = self.fem.bias_refresh_interval - time_into_window
if time_available < 0:
IOLoop.instance().call_later(0.09, self.acquisition)
return
frames_before_bias = self.fem.frame_rate * time_available
number_frames_before_bias = int(round(frames_before_bias))
self.number_frames_to_request = self.number_frames - self.frames_already_acquired
# Can we obtain all required frames within current bias window?
if (number_frames_before_bias < self.number_frames_to_request):
# Need >1 bias window to fulfil acquisition
self.extended_acquisition = True
self.number_frames_to_request = number_frames_before_bias
self.total_delay = time_available + self.fem.bias_voltage_settle_time + \
self.fem.time_refresh_voltage_held
# # TODO: Remove once Firmware made to reset on each new acquisition
# # TODO: WILL BE NON 0 VALUE IN THE FUTURE - TO SUPPORT BIAS REFRESH INTV
# # BUT, if nonzero then won't FP's Acquisition time out before processing done?????
# #
# Reset Reorder plugin's frame_number (to current frame number, for multi-window acquire)
command = "config/reorder/frame_number"
request = ApiAdapterRequest(self.file_dir,
content_type="application/json")
request.body = "{}".format(self.frames_already_acquired)
self.adapters["fp"].put(command, request)
# TODO: To be removed once firmware updated? FP may be slow to process frame_number reset
time.sleep(0.5)
# Reset histograms, call DAQ's prepare_daq() once per acquisition
if self.initial_acquisition:
# Issue reset to histogram
command = "config/histogram/reset_histograms"
request = ApiAdapterRequest(self.file_dir,
content_type="application/json")
request.body = "{}".format(1)
self.adapters["fp"].put(command, request)
self.daq_target = time.time()
self.daq.prepare_daq(self.number_frames)
self.initial_acquisition = False
# Acquisition (whether single/multi-run) starts here
self.acquisition_in_progress = True
# Wait for DAQ (i.e. file writer) to be enabled before FEM told to collect data
# IOLoop.instance().call_later(0.1, self.await_daq_ready)
IOLoop.instance().add_callback(self.await_daq_ready)